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NBER (National Bureau of Economic Research) Working Papers
The National Bureau of Economic Research is a private, nonprofit, nonpartisan research organisation.  This database provides access to the initial reports of NBER researchers aimed at other professional economists around the world. Nearly 700 NBER Working Papers are published each year, and many subsequently appear in scholarly journals.

NEP: New Economics Papers
Provides information about new additions to RePEc.

New Palgrave Dictionary of Economics
Online version of the extensive and authoritative economics reference resource. This 2nd edition, contains over 1,850 articles by more than 1,500 of the world's leading economists.

New Pauly Online
Encyclopaedia of ancient history with 200,000+ articles on antiquity and classical tradition.  Includes both the original Der Neue Pauly and supplements [German], and it's translation Brill's New Pauly and supplements [English].

New York Times Archive
Complete archive of the New York Times newspaper (New York, United States), including all issues from 1851 to 2016, and the New York Times Index from 1951 to 1993.

Nexis
A collection of resources providing UK and international newspapers, and business information for over 100 countries worldwide. Information sources include the Financial Times, Dun & Bradstreet, Hoover’s, ICC, Worldscope, Disclosure.

Nineteenth Century UK Periodicals
Collection of 19th century British periodicals, including: Part I Women's, Children's, Humour, and Leisure); and Part II Empire.

Nineteenth Century US Newspapers
Collection of 19th century American newspapers, including 17+ million articles from 400+ newspaper titles, published from 1800 to 1899.